<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    #ldl{width: 100px;height: 30px;
         color: red;
         background-color: green;
         text-align: center;
         line-height: 30px;
    }
    span{font-size: 25px;font-style: italic;}
    #cls{font-weight: normal;
      text-shadow: blue -5px 5px 3px;}
    #sd{text-decoration: underline;}
    a{text-decoration: none;
      font-weight: bold;
      font-size: 20px;
    }
  </style>
</head>
<body>
<div id="ldl">姜桑</div>
<div>刘桑</div>
<span>孙小</span>
<span>阿国</span>
<h1 id="cls">苍老师</h1>
<h1 id="sd">水多老师</h1>
<a href="http://www.baidu.com">百度</a>
</body>
</html>